Official Russian data revealed that the affected refineries have a combined capacity exceeding 83 million tons annually, about 25% of Russia’s refining output. They account for over 30% of gasoline and 25% of diesel production, threatening tighter fuel markets. Moscow has already banned gasoline exports until July to stabilize domestic supply.

Russian officials said Ukraine has escalated drone strikes on energy infrastructure, doubling the number of refineries targeted since the start of the year. Attacks also hit pipelines and storage facilities, undermining Russia’s oil production—the world’s third largest—and straining its budget, which relies heavily on oil and gas revenues.

Among the sites struck was the Kirishi refinery, one of Russia’s largest in the west, which has been fully offline since May 5 with a capacity of 20 million tons annually. Another major refinery with 17 million tons capacity was attacked on May 20, though its current status remains unclear.

The escalation comes as the war continues, with Kyiv increasingly focusing on Russia’s energy and critical infrastructure to weaken Moscow’s financial resources for sustaining military operations.